Apple CEO Tim Cook will step down, concluding his nearly 15-year tenure. He will hand over the CEO duties to John Ternus, the company's head of hardware engineering, effective September 1.

Apple CEO Tim Cook is stepping down from the job that he inherited from the late Steve Jobs, ending a nearly 15-year reign that saw the company’s market value soar by more than US$3.6 trillion during an iPhone-fuelled era of prosperity. Cook, 65, will turn the CEO duties over to Apple’s head of hardware engineering, John Ternus, on September 1 while remaining involved with the Cupertino, California, company as executive chairman. That is similar to the transitions made by Amazon’s Jeff Bezos and...